https://imgur.com/a/h5Uh9yP
Walls, belts and turrets show up much larger than they actually are (the blueprint itself is over 1000 x 1000). To answer any questions, I was testing out an image to blueprint converter.
Blueprint preview does weird things at large blueprint scales
Re: Blueprint preview does weird things at large blueprint scales
See: 3638 and post a save that includes a bp that reproduces your issue.
Re: Blueprint preview does weird things at large blueprint scales
Interesting. Since 1 tile is scaled to 1px or so, pixels of entities happen to be sampled in a way that they tile in this seemingly unscaled pattern.